Tags Dr. Mike Griffin NASA National Space Council Commercial space SLS Falcon Heavy government funding for space Return to the Moon Mars Airship to orbit NASA PR heavy lift government space program space advocacy deep space mining ARM Airship to orbit public space advocacy orbiting fuel depots lunar depots human spaceflight gravity RX scurvy space exploration risks NASA budget & best use Guest Dr. Michael D. Griffin Tagline Space policy, development, & much more View the discussion thread.